Secreted forms of amyloid precursor protein (APP) may play an important role in the formation and consolidation of memory, according to a study published in today's proceedings of the National Academy of Science...

Mutations in the enzyme for superoxide dismutase (SOD1) have been linked to 15 tp 20 percent of cases of amyotrophic lateral sclerosis (ALS), leading to a theory that the disease results when the defective enzyme allows super oxide radicals to build up...